body {
    position: relative;
    padding-top: 60px;
}

.nav-tabs > .active > a,
.nav-tabs > .active > a:hover,
.nav-tabs > .active > a:focus {
    color: rgb(255, 255, 255);
    text-shadow: 0px -1px 0px rgba(0, 0, 0, 0.2);
    background-color: rgb(0, 136, 204);
}